Celestia STS provides ground-based solutions in the domains of satellite simulation, testing, communication, and data processing.

Established in 1985 as Satellite Services B.V. (SSBV) in 2016 has been acquired by Celestia Technologies Group and re-branded to Celestia Satellite Test & Simulation B.V. to continue as a competence centre for EGSE and TT&C solutions.

C-STS has more than 30 years of experience in the space industry. More than 300 EGSEs and TT&C modems delivered to Space Agencies, Large System Integrators, and specialized flight-equipment manufacturers around the World. C-STS EGSE solutions have been used in more than 80% European Space Agency Missions.

C-STS systems are predominantly used in either in clean room/AIT environments using direct connections to spacecraft equipment for verification and test purposes or in ground stations for communication with the spacecraft.

C-STS has a strong customer base, having delivered many systems to a variety of leading companies and institutions within the space industry including the European Space Agency (ESA), Airbus Defence and Space (ADS), Thales Alenia Space (TAS), OHB System (OHB), SSTL and many others.

C-STS manufactures a wide range of products that are available as independent components or can be adapted to fulfill customer needs and built into complete turn-key satellite testing systems.